LOS ANGELES, CA – OCTOBER 27: Grout fillsin some of the cracks formed over the years in the structure of the Sixth Street bridge on October 27, 2011 in Los Angeles, California. U.S. Sen. Barbara Boxer (D-Ca) and Los Angeles Mayor Antonio Villaraigosa said in a news conference today that the Sixth Street bridge over the Los Angeles River and the Hollywood Freeway is likely to fall during a major earthquake. They are pushing for federal funding to help repair the aging structure and askings Congress to immediately pass a transportation bill co-sponsored by Boxer that would fund 91 percent of the cost to replace the bridge. (Photo by Kevork Djansezian/Getty Images)